so far, the incident hasn't compromised the two-day old cease-fire between israel and hamas. it was a come mer seen on gaza and egypt where two crossings were opened again. they closed when the fighting broke out. now palestinians can once again travel to egypt. egypt's president earned high praise from the u.s. for leading cease-fire negotiations. but now he is facing a backlash from his own people for trying to expand his powers. [ non-english language ] >> reporter: the egyptian president's spokesman announced on television that the president and his parliament would be exempt from legal challenges until a new constitution is written. egyptians took to the streets in protest. police fired tear gas near cairo's tahrir square, the heart of the 2011 uprising that toppled hosni mubarak. now thousands of demonstrators are calling for morsi to step down. tara mergener for cbs news, washington. >>> a natural gas explosion destroyed two buildings in one of new england's largest steams of the the blast sent bricks and glass flying through downtown springfield, massachusetts, about